From: Chuck Lever <chuck.lever@oracle.com>
To: "J. Bruce Fields" <bfields@fieldses.org>
Cc: Trond Myklebust <trond.myklebust@primarydata.com>,
Anna Schumaker <Anna.Schumaker@netapp.com>,
Linux NFS Mailing List <linux-nfs@vger.kernel.org>,
Tom Talpey <tom@talpey.com>
Subject: Re: [PATCH v1 13/16] NFS: Add sidecar RPC client support
Date: Thu, 23 Oct 2014 09:55:28 -0400 [thread overview]
Message-ID: <D826C6DC-A3BB-4AD8-AD45-934BA6F11D1A@oracle.com> (raw)
In-Reply-To: <20141023133229.GA16717@fieldses.org>
On Oct 23, 2014, at 9:32 AM, J. Bruce Fields <bfields@fieldses.org> wrote:
> On Tue, Oct 21, 2014 at 01:11:26PM -0400, Chuck Lever wrote:
>> The size of the changeset _is_ the justification. It’s
>> a much less invasive change to add a TCP side-car than
>> it is to implement RDMA backchannel on both server and
>> client.
>
> Something I'm confused about: is bidirectional RPC/RDMA optional or
> mandatory for servers to implement?
IMO bi-directional RPC/RDMA is not required anywhere in RFCs 5666
(the RPC/RDMA spec) or 5667 (the NFS on RPC/RDMA spec).
> Something somewhere has to be mandatory if we want to guarantee a
> working backchannel between any two implementations.
--
Chuck Lever
chuck[dot]lever[at]oracle[dot]com
next prev parent reply other threads:[~2014-10-23 13:55 UTC|newest]
Thread overview: 34+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-10-16 19:38 [PATCH v1 00/16] NFS/RDMA patches for 3.19 Chuck Lever
2014-10-16 19:38 ` [PATCH v1 01/16] xprtrdma: Return an errno from rpcrdma_register_external() Chuck Lever
2014-10-16 19:38 ` [PATCH v1 02/16] xprtrdma: Cap req_cqinit Chuck Lever
2014-10-20 13:27 ` Anna Schumaker
2014-10-16 19:38 ` [PATCH v1 03/16] SUNRPC: Pass callsize and recvsize to buf_alloc as separate arguments Chuck Lever
2014-10-20 14:04 ` Anna Schumaker
2014-10-20 18:21 ` Chuck Lever
2014-10-16 19:38 ` [PATCH v1 04/16] xprtrdma: Re-write rpcrdma_flush_cqs() Chuck Lever
2014-10-16 19:38 ` [PATCH v1 05/16] xprtrdma: unmap all FMRs during transport disconnect Chuck Lever
2014-10-16 19:39 ` [PATCH v1 06/16] xprtrdma: spin CQ completion vectors Chuck Lever
2014-10-16 19:39 ` [PATCH v1 07/16] SUNRPC: serialize iostats updates Chuck Lever
2014-10-16 19:39 ` [PATCH v1 08/16] xprtrdma: Display async errors Chuck Lever
2014-10-16 19:39 ` [PATCH v1 09/16] xprtrdma: Enable pad optimization Chuck Lever
2014-10-16 19:39 ` [PATCH v1 10/16] NFS: Include transport protocol name in UCS client string Chuck Lever
2014-10-16 19:39 ` [PATCH v1 11/16] NFS: Clean up nfs4_init_callback() Chuck Lever
2014-10-16 19:39 ` [PATCH v1 12/16] SUNRPC: Add rpc_xprt_is_bidirectional() Chuck Lever
2014-10-16 19:40 ` [PATCH v1 13/16] NFS: Add sidecar RPC client support Chuck Lever
2014-10-20 17:33 ` Anna Schumaker
2014-10-20 18:09 ` Chuck Lever
2014-10-20 19:40 ` Trond Myklebust
2014-10-20 20:11 ` Chuck Lever
2014-10-20 22:31 ` Trond Myklebust
2014-10-21 1:06 ` Chuck Lever
2014-10-21 7:45 ` Trond Myklebust
2014-10-21 17:11 ` Chuck Lever
2014-10-22 8:39 ` Trond Myklebust
2014-10-22 17:20 ` Chuck Lever
2014-10-22 20:53 ` Trond Myklebust
2014-10-22 22:38 ` Chuck Lever
2014-10-23 13:32 ` J. Bruce Fields
2014-10-23 13:55 ` Chuck Lever [this message]
2014-10-16 19:40 ` [PATCH v1 14/16] NFS: Set BIND_CONN_TO_SESSION arguments in the proc layer Chuck Lever
2014-10-16 19:40 ` [PATCH v1 15/16] NFS: Bind side-car connection to session Chuck Lever
2014-10-16 19:40 ` [PATCH v1 16/16] NFS: Disable SESSION4_BACK_CHAN when a backchannel sidecar is to be used Chuck Lever
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=D826C6DC-A3BB-4AD8-AD45-934BA6F11D1A@oracle.com \
--to=chuck.lever@oracle.com \
--cc=Anna.Schumaker@netapp.com \
--cc=bfields@fieldses.org \
--cc=linux-nfs@vger.kernel.org \
--cc=tom@talpey.com \
--cc=trond.myklebust@primarydata.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.